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TPS40042 - SYNCHRONOUS BUCK DC-TO-DC CONTROLLER

General Description

The TPS40042 DC/DC controller is designed to operate with an input source between a 3.0 V and 5.5 V.

To reduce the number of external components, a number of operating parameters are fixed internally.

The operating frequency for example, is internally set at 600 kHz.

Key Features

  • 1.
  • 2 3.0-V to 5.5-V Input.
  • External Reference required: 0.5 V to 1.5 V.
  • Output Voltage from REFIN to 90% of VIN.
  • High-Side Drive for N-Channel FET.
  • Supports Pre-Biased Outputs.
  • Adaptive Anti-Cross Conduction Gate Drive.
  • Fixed switching frequency (600 kHz) Voltage Mode Control.
  • Three Selectable Short Circuit Protection Levels.
  • Hiccup Restart from Faults.
  • Active Low Enable.
  • Thermal Shutdown Protection.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
TPS40042 www.ti.com SLUS777 – NOVEMBER 2007 LOW PIN COUNT, LOW VIN (3.0 V TO 5.5 V) SYNCHRONOUS BUCK DC-TO-DC CONTROLLER WITH EXTERNAL REFERENCE INPUT FEATURES 1 •2 3.0-V to 5.5-V Input • External Reference required: 0.5 V to 1.